docs: def _datasets_line(args):
    """Implements the BigQuery datasets magic used to display datasets in a project.
  
     The supported syntax is:
  
         %bigquery datasets [-f <filter>] [-p|--project <project_id>]
  
    Args:
      args: the arguments following '%bigquery datasets'.
    Returns:
      The HTML rendering for the table of datasets.
    """
    filter_ = args['filter'] if args['filter'] else '*'
    return _render_list([str(dataset) for dataset in datalab.bigquery.Datasets(args['project'])
                         if fnmatch.fnmatch(str(dataset), filter_)])